Upgrade: [dependabot] - bump opensearch-py from 3.0.0 to 3.1.0

Bumps [opensearch-py](https://github.com/opensearch-project/opensearch-py) from 3.0.0 to 3.1.0.
- [Release notes](https://github.com/opensearch-project/opensearch-py/releases)
- [Changelog](https://github.com/opensearch-project/opensearch-py/blob/main/CHANGELOG.md)
- [Commits](opensearch-project/opensearch-py@v3.0.0...v3.1.0)

---
updated-dependencies:
- dependency-name: opensearch-py
  dependency-version: 3.1.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

poetry.lock

@@ -34,7 +34,7 @@ slack-bolt = "^1.25.0"
 slack-sdk = "^3.39.0"
 boto3 = "^1.40.34"
 requests = "^2.32.5"
-opensearch-py = "^3.0.0"
+opensearch-py = "^3.1.0"
 urllib3 = "^2.5.0"
 aws-lambda-powertools = "^3.23.0"
 boto3-stubs = {extras = ["bedrock-agent", "bedrock-agent-runtime", "bedrock-runtime", "cloudformation", "dynamodb", "lambda"], version = "^1.40.54"}